Innovation Center for Organic Electronics (INOEL), Yamagata University　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 　　　　　　　　　　　　　　　　　　　　　　　　　　　　　
1-808-48 Arcadia, Yonezawa, Yamagata 992-0119, Japan　　TEL：+81-238-29-0575　　FAX：+81-238-29-0569

Prof. H. Nakada nakada@yz.yamagata-u.ac.jp 　　Prof. M. Koden koden@yz.yamagata-u.ac.jp

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(Main Members)

Hitoshi Nakada
Professor

Dr. Mitsuhiro Koden
Professor

Tadahiro Furukawa
Associate Professor

Dr. Toshinao Yuki
Associate Professor

Transparent electrode (1) --- Conducting polymer / Silver nanowire

　Home ⇒ Technology ⇒ Transparent electrode (1)

The conducting polymer technology and silver nanowire technology for non-ITO transparent electrodes were developed, being applied to the stacking electrode consisting of these two technologies.

◎Conducting polymer

The conducting polymers for an anode of OLED devise were developed. OLED devices with the developed conducting polymer show comparable performance with the reference OLED devices with normal ITO. ITO-free OLED devices were developed using the developed conducting polymer and an assisting bass line [1].

◎Stacking electrode consisting of silver nanowire and conducting polymer

The stacking electrode consisting of silver nanowire and conducting polymer was developed.

Flexible OLED devices on ultra-thin glass were developed using the stacking electrode consisting of silver nanowire and conducting polymer.

Non-ITO electrode	Feature	Issue
Conducting polymer	Uniform emission in OLED	High resistivity
Silver nanowire (AgNW)	Low resistivity (less than 10W/sq)	Non-emission uniformity in OLED

◎Flexography printing of the stacking electrode consisting of silver nanowire and conducting polymer

Flexible OLED devices were developed, using Flexography printing of the stacking electrode consisting of silver nanowire and conducting polymer [6].

References

[1] M. Koden, H. Kobayashi, T. Moriya, N. Kawamura, T. Furukawa, H. Nakada, IDW'14, FMC6/FLX6-1 (2014). “Flexible Substrates and Alternative Electrodes of ITO for OLED Lighting”

[2] 仲田仁, 川村憲史, 向殿充浩, 有機EL討論会第２０回例会, S6-3 (2015). “ITO代替透明電極を用いた有機EL素子”

[3] 結城敏尚, 川村憲史, 仲田仁, 向殿充浩, 有機EL討論会第21回例会, S4-9 (2015). “ITO代替透明電極を用いた有機EL素子の寿命特性”

[4] M. Koden, The Twenty-second International Workshop on Active-matrix Flatpanel Displays and Devices (AM-FPD 15), 2-1 (Invited) (2015). “Flexible Substrates and Non-Transparent Electrodes for Organic Electronics”

[5] M. Koden, T. Furukawa, T. Yuki, H. Kobayashi, H. Nakada, IDW/AD’16, FLX3-1 (2016). “Substrates and Non-ITO Electrodes for Flexible OLEDs”

[6] T. Furukawa, N. Kawamura, J. Inoue, H, Nakada, M. Koden, SID 2015, P-57 (2015).
"OLED lighting devices fabricated by flexography printing of silver nanowire and conducting polymer"

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